The answers are to do with transport in the loosest sense at times
36 Sort of jacket (10)
37. Person who drags heavy objects (6)
38. Front row player (6)
47. Half a day + barrier (7)
53. Demolition Expert (9)
55. Add up for sauce (5)
60. Inner casing (5)
61. Sore (6)
68. Mediterranean coastal vessel (7)
88. This produces a triple echo (10)
99. Not a sea dog (4 5)